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> 化简(x2-1x2-2x+1+1-xx+1)÷xx-1的结果是______.-数学
化简(x2-1x2-2x+1+1-xx+1)÷xx-1的结果是______.-数学
题目简介
化简(x2-1x2-2x+1+1-xx+1)÷xx-1的结果是______.-数学
题目详情
化简
(
x
2
-1
x
2
-2x+1
+
1-x
x+1
)÷
x
x-1
的结果是______.
题型:填空题
难度:中档
来源:不详
答案
原式=[
(x+1)(x-1)
(x-1
)
2
-
class="stub"x-1
x+1
]•
class="stub"x-1
x
=
class="stub"x+1
x
-
(x-1
)
2
x(x+1)
=
(x+1
)
2
-(x-1
)
2
x(x+1)
=
class="stub"4x
x(x+1)
=
class="stub"4
x+1
.
故答案为:
class="stub"4
x+1
.
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题目简介
化简(x2-1x2-2x+1+1-xx+1)÷xx-1的结果是______.-数学
题目详情
答案
=
=
=
=
故答案为: